Joonas Korpisalo had a night to forget in Florida. So did several of his Bruins teammates.

"He was good tonight. The players in front of him, the rest of the team and the coaching staff? We weren't good enough."

Ahead of puck drop Tuesday night at Amerant Bank Arena, a raucous sea of red in the stands cheered as one in celebration of the Panthers’ Stanley Cup triumph just four months earlier.

A few hours later, that same crowd further twisted the knife against a Bruins team that has borne the brunt of the Panthers’ punishment over the last two years.

“We Want Swayman!,” the crowd roared with each puck that sailed past Joonas Korpisalo and into twine.

As Swayman sat on the bench, Boston’s other netminder found himself on the ropes against Florida.

Pressed into starting duties Tuesday following Swayman’s absence during training camp and preseason action, Korpisalo was put under siege early and often by Florida’s suffocating O-zone pressure.

The final results were ugly. A two-goal defeat masked just how lopsided Tuesday’s 6-4 loss was for Boston, with the reigning Stanley Cup champions bludgeoning Boston in the same manner as the past two postseasons.

A quick glance at Korpisalo’s final numbers seemingly said it all as far as Boston’s lackluster performance. The Bruins’ new goalie relinquished six goals off of 35 total shots.

According to Natural Stat Trick, the quality of Florida’s shot attempts and scoring chances equated out to an expected goals against rate of 5.10 — meaning that Korpisalo surrendered more than what he should have, given the looks generated in front of him.

It wasn’t the debut that the 30-year-old netminder was looking for, to say the least.

“Just got to be better,” Korpisalo said postgame. “6-4? Not happy.”

But based on Jim Montgomery’s musings, Korpisalo should not be the one dreading whatever the game tape will reveal upon further review.

“Korpisalo was not a problem tonight,” Montgomery said. “It was people in front of them. You can’t give up four backdoor tap-ins and expect your goalie to make save after save. He made a lot of saves on breakaways.

“He was good tonight. The players in front of him, the rest of the team and the coaching staff? We weren’t good enough.”

Korpisalo was certainly not without fault.

His rebound-control woes allowed the Panthers to pounce on several skittering pucks in Grade-A ice. His team desperately needed a save on Sam Reinhart’s shorthanded tally in the first period — scored 3:01 after Pavel Zacha gave Boston life with a shorthanded strike.

But for every lapse that Korpisalo committed in net, there were about three or four miscues unraveling Boston’s malleable defensive structure further up the ice.

“We didn’t play well. Obviously, they came [out] hot in their building,” Nikita Zadorov noted. “I don’t think we made a play in the first period [with] the puck. We lost every battle on the walls, in our zone, netfront, everything.”

Much as they did the last two years, the Panthers pushed around a Bruins roster supposedly braced for a stronger retort against Florida following a busy summer.

Of the Panthers’ six tallies, five of them came off the rush — with Boston’s inability to get pucks deep against Florida’s relentless forecheck often leading to quality chances surging down the other end of the frozen sheet.

Those self-inflicted errors and ill-advised passes have been a familiar sight for a Bruins team still looking to play catch-up with the top dog (or cat, rather) in the Eastern Conference.

An overhauled roster and reshuffled lineup did little to stem the tide against Florida’s waves of offense.

Boston lost its composure on several occasions, leading to eight total penalties and six power-play bids for the Panthers.

An offense that averaged just 2.17 goals per contest against Sergei Bobrovsky in in May was sleepwalking out of the gate Tuesday. By 8:57 in the opening period, Boston mustered just one shot on goal against Bobrovsky. Korpisalo had already faced 12 shots over that same stretch.

A defensive pairing of Brandon Carlo and Mason Lohrei in particular labored on Tuesday. In their 11:42 of 5-on-5 ice time together, the Panthers outshot Boston, 9-2, and outscored them, 3-1.

“Their execution was really good,” Montgomery said of Florida. “Our execution was really poor. Like I can’t pinpoint why we looked slow, but we looked slow the entire game — not just the first 10 minutes, in my opinion.”

The Bruins will eagerly await Swayman’s return in net, be it for Thursday’s home opener against the Habs or a Saturday matinee on Causeway Street against the Kings.

The ceiling of this roster is understandably much higher now that Swayman is back in the fold.

But given the state of Boston’s defensive fortitude (or lack thereof) on Tuesday, a goalie of Swayman’s caliber likely would have endured the same fate as his new teammate had he been the one between the pipes.